Here is the response I got when running md5sum

C:\Temp\Rio>md5sum v413.hijack.mk2.zimage
215c920ce353441c3f7fe45c894d1fcf *v413.hijack.mk2.zImage

I downloaded the zimage file from here:
http://empeg-hijack.sourceforge.net/ and selected the pre-built kernel for all mk2 players.

-Chris
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MKII 24G SN# 8000333 MKIIa 30G